A silicon junction diode is described

PHYSICS · Subjective · Fermi University Physics · Electronics, Instrumentation & Communication · Semiconductor devices and analogue circuits · Semiconductor devices and analogue circuits

Electronics for Measurement, Ch The junction: an element whose current is exponential in its voltage

Problem

A silicon junction diode is described, at

T = 298\,\mathrm{K}

, by the fitted parameters

n = 1.01

and

I_S = 1.0\times10^{-13}\,\mathrm{A}

. Using the diode equation

I = I_S\left(e^{V/nV_T} - 1\right)

with

V_T = k_BT/e

, find the current when the forward voltage is

0.65\,\mathrm{V}

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